England have operated an impressive defence in this year’s 6 Nations, and in the 3 games so far it has been the platform for their success: the intensity that Paul Gustard’s scheme has injected into their play makes it difficult for opponents to get on to the front foot in attack, and with the ball they have been able to feed off the turnover opportunities it creates. Athletes like George Kruis, Maro Itoje and James Haskell thrive in a system that requires them to work off the line, cut down space and win physical battles in the contact area; on the outside, Owen Farrell and Jonathan Joseph couple similarly sound physical capabilities in the tackle with excellent lateral movement and tracking of runners.